import type { BridgeState } from '../runtime/bridge';
import type { Prefs } from '../runtime/prefs';
import type { SourceAdapter } from './source-contract';
/** What the poller needs from the composition root that owns the bridge. */
export interface SourcePollerDeps {
    setState: (patch: Partial<BridgeState>) => void;
    getState: () => BridgeState;
    getPrefs: () => Prefs;
}
/** Props one source's scheduler receives from the collector. */
export interface SourcePollerProps {
    adapter: SourceAdapter;
    /** Is a turn running? A true → false edge is the `settle` trigger. */
    running: boolean;
    /** Is the rail on screen? Read by `schedule.railOpen`. */
    railOpen: boolean;
}
/** Build the scheduler component bound to one bridge. */
export declare function createSourcePoller(deps: SourcePollerDeps): (props: SourcePollerProps) => null;